$ git pull --allow-unrelated-histories git://tremily.us/signed-off-by.git contributing-github
+ If you like signing merges, you may want to run:
+
+ $ git commit --amend --signoff --no-edit
+
2. Tell your developers by pointing to
`Documentation/SubmittingPatches` from your `README` or
`CONTRIBUTING` documentation and sending a message to your mailing